Method and apparatus to filter X-ray beams generated using a CT apparatus with displaced geometry
    42.
    发明授权
    Method and apparatus to filter X-ray beams generated using a CT apparatus with displaced geometry 有权
    过滤使用具有移位几何形状的CT装置产生的X射线束的方法和装置

    公开(公告)号:US08666020B2

    公开(公告)日:2014-03-04

    申请号:US13144167

    申请日:2009-12-09

    IPC分类号: A61B6/03

    摘要: A method and apparatus are provided to filter x-ray beams generated using a CT apparatus or other x-ray based system with displaced acquisition geometry. A CT apparatus may be used having a source (102), a detector (104) transversely displaced from a center (114) of a field of view (118) during acquisition of the projection data, and a filter (146). The filter may absorb at least a portion of overlapping radiation emitted by the source at opposing angular positions. The amount of transverse displacement may be determined for a desired field of view configuration and amount of overlapping radiation. The detector may be adjusted to correspond to the amount of determined transverse displacement. The size and location of the filter may be determined based on the amount of overlapping radiation. The filter may be adjusted to correspond to the determined size and location of the filter.

    摘要翻译: 提供了一种方法和装置,用于过滤使用CT装置产生的X射线束或其他基于X射线的取向几何形状的系统。 可以使用CT装置,其具有源(102),在获取投影数据期间从视场(118)的中心(114)横向移位的检测器(104)和过滤器(146)。 过滤器可以吸收源在相对的角位置处发射的重叠辐射的至少一部分。 可以针对期望的视场配置和重叠辐射量来确定横向位移的量。 检测器可以被调节以对应于确定的横向位移的量。 滤波器的尺寸和位置可以基于重叠辐射的量来确定。 滤波器可以被调节以对应于所确定的滤波器的尺寸和位置。

    METHOD AND APPARATUS FOR BREATHING ADAPTED IMAGING
    44.
    发明申请
    METHOD AND APPARATUS FOR BREATHING ADAPTED IMAGING 审中-公开
    用于呼吸适应成像的方法和装置

    公开(公告)号:US20120002780A1

    公开(公告)日:2012-01-05

    申请号:US13203994

    申请日:2010-02-09

    IPC分类号: H05G1/60 G06K9/00

    摘要: A method is provided for imaging a portion of a patient that moves as a patient breathes. A motion map is produced of the portion's motion during a breathing cycle of the patient. A scanning protocol is generated using information obtained from the motion map for a given source/detector position and a given point in the breathing cycle. The scanning protocol comprises at least one setting for at least one imaging apparatus component such that a desired amount of x-ray dosage is applied to the portion of the patient at the given source/detector position and the given point in the breathing cycle. An imaging scan is performed of the portion of the patient. The at least one imaging apparatus component is adjusted during the imaging scan.

    摘要翻译: 提供了一种用于对患者呼吸时移动的患者的一部分进行成像的方法。 在患者的呼吸周期期间,该部分的运动产生运动图。 使用从给定源/检测器位置的运动图获得的信息和呼吸周期中的给定点生成扫描协议。 扫描方案包括用于至少一个成像设备部件的至少一个设置,使得在给定的源/检测器位置和呼吸周期中的给定点,将期望量的x射线剂量施加到患者的部分。 对患者的部分进行成像扫描。 在成像扫描期间调整至少一个成像装置部件。

    Image processing device and method for blood flow imaging
    45.
    发明授权
    Image processing device and method for blood flow imaging 有权
    血流成像图像处理装置及方法

    公开(公告)号:US08009885B2

    公开(公告)日:2011-08-30

    申请号:US11910477

    申请日:2006-04-03

    IPC分类号: G06K9/00 A61B5/05

    摘要: An image processing device is proposed and includes a reconstruction unit (51) for reconstruction of a 3D volume image of said object from said first series of X-ray projection images (D), a segmentation unit (52) for segmentation of the vessel tree from said 3D volume image, a forward projection unit (54) for forward projection of the segmented vessel tree onto said first and projection plane (R1, R2), respectively, and a mapping unit (55) for mapping of the image values of pixels of the vessel tree in said second and third, respectively, series of X-ray projection images onto corresponding voxels of said 3D volume image to obtain said time series of 3D volume images showing the blood flow in the vascular tree of the object.

    摘要翻译: 提出一种图像处理装置,包括:重建单元(51),用于从所述第一系列X射线投影图像(D)重建所述对象的3D体积图像;分割单元(52),用于分割血管树 从所述3D体积图像中分别将分段血管树向前投影到所述第一和投影平面(R1,R2)上的前向投影单元(54)和用于映射像素的图像值的映射单元(55) 分别将所述第二和第三的容器树的一系列X射线投影图像输送到所述3D体积图像的相应体素上,以获得所述时间序列的3D体积图像,其显示所述对象的血管树中的血流。

    Method of imaging the blood flow in a vascular tree
    47.
    发明授权
    Method of imaging the blood flow in a vascular tree 失效
    在血管树中血流成像的方法

    公开(公告)号:US06823204B2

    公开(公告)日:2004-11-23

    申请号:US10221240

    申请日:2002-09-09

    IPC分类号: A61B505

    摘要: The invention relates to a method of imaging a vascular tree that yields additional information concerning the vascular tree. To this end, a sequence of clusters is determined from spatially coherent voxels in the three-dimensional image of the vascular tree, the sequence of said clusters corresponding to the flow direction of the blood or the contrast medium in said vascular tree.

    摘要翻译: 本发明涉及一种对血管树进行成像的方法,其产生关于血管树的附加信息。 为此,从血管树的三维图像中的空间相干体素确定簇序列,所述簇的序列对应于所述血管树中的血液或造影剂的流动方向。

    Linear guide arrangement
    48.
    发明授权
    Linear guide arrangement 失效
    直线导轨装置

    公开(公告)号:US06513976B2

    公开(公告)日:2003-02-04

    申请号:US09970636

    申请日:2001-10-04

    IPC分类号: F16C2906

    摘要: In a linear guide arrangement (10a) with an elongated guide rail (12a) and a guide carriage (14a) that can travel thereon in the lengthwise direction (L) of the guide rail (12a), a surface of the guide rail (12a) facing the guide carriage (14a) is covered by a cover band (24a). A band securing element (32a) is placed in the vicinity of each of the two longitudinal ends (30a) of the guide rail (12a). The two band securing elements (32a) jointly secure the cover band (24a) at least with respect to its displacement in lengthwise direction (L) of the guide rail (12a), wherein each of the band securing elements (32a) at least impedes movement of the cover band (24a) relative to the guide rail (12a) directed towards the other band securing element (32a). At least one of the band securing elements (32a) can be non-positively engaged with the cover band (24a) as well as with the guide rail (12a).

    摘要翻译: 在具有细长导轨(12a)的直线引导装置(10a)和能够在导轨(12a)的长度方向(L)上行进的引导滑架(14a)上,导轨(12a)的表面 )面向导向架(14a)被盖带(24a)覆盖。 带固定元件(32a)被放置在导轨(12a)的两个纵向端部(30a)中的每一个附近。 两个带固定元件(32a)至少相对于其在导轨(12a)的长度方向(L)上的位移共同固定盖带(24a),其中每个带固定元件(32a)至少阻碍 所述盖带(24a)相对于所述导轨(12a)指向另一带固定元件(32a)的运动。 带固定元件(32a)中的至少一个可以与盖带(24a)以及导轨(12a)非积极地接合。